Pitcher David Phelps has a torn UCL and will undergo Tommy John surgery, ending his 2018 season, the Mariners announced on Wednesday. Phelps was making brief one-inning stints in the Cactus League as he worked his way back from a procedure to remove a bone spur from his elbow last September. He said he felt the ligament tear on his final pitch against the Angels in his March 17 appearance.

Phelps, 31, was expected to set up for closer Edwin Diaz. The right-hander, between the Marlins and Mariners last season, posted a 3.40 ERA with a 62/26 K/BB ratio in 55 2/3 innings. He and the Mariners avoided arbitration in January, agreeing on a $5.55 million salary for the 2018 campaign. Phelps will become eligible to become a free agent at the end of the season.

As the Mariners noted in their statement, the expected recovery period for Tommy John surgery is 12-15 months, so this very likely cuts into Phelps’ 2019 season as well.

Ramos has been on a rehab assignment with Advanced-A Clearwater, recovering from a strained left hamstring he suffered just ahead of the All-Star break when he was with the Rays. The Phillies acquired him on July 31 prior to the non-waiver trade deadline for a player to be named later.

Prior to the injury, Ramos was batting a healthy .297/.346/.488 with 14 home runs and 53 RBI in 315 plate appearances. His arrival will likely mean back-up catcher Andrew Knapp gets sent down to Triple-A Lehigh Valley. Ramos could also draw the lion’s share of the playing time behind the plate, bumping first-string catcher Jorge Alfaro down on the depth chart.